Grey gamers flex brain muscles By Chris Hogg BBC Tokyo correspondent Games like Nintendo's Brain Training: have sold well in Japan In Japan's rapidly ageing society, more and more older people are looking for ways to keep them active and alert for longer. Electronic games makers have responded with new products designed to train your brain. The games developed by scientists will, it is claimed, help to delay the onset of dementia. Millions have been sold so far in Japan. This month the games will be launched in Europe. Grey gamers In a Tokyo classroom, a teacher demonstrates how...